EP2956634B1 - Flexible hitzeschildauskleidungsaufhängeranordnung für gasturbinenmotoren und verfahren zur befestigung - Google Patents

Flexible hitzeschildauskleidungsaufhängeranordnung für gasturbinenmotoren und verfahren zur befestigung Download PDF

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Publication number
EP2956634B1
EP2956634B1 EP13874990.8A EP13874990A EP2956634B1 EP 2956634 B1 EP2956634 B1 EP 2956634B1 EP 13874990 A EP13874990 A EP 13874990A EP 2956634 B1 EP2956634 B1 EP 2956634B1
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EP
European Patent Office
Prior art keywords
segment
case
bushing
liner
fastener
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP13874990.8A
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English (en)
French (fr)
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EP2956634A1 (de
EP2956634A4 (de
Inventor
Lon H. PRESTON
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
RTX Corp
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United Technologies Corp
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Publication date
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Publication of EP2956634A4 publication Critical patent/EP2956634A4/de
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
    • F01D25/28—Supporting or mounting arrangements, e.g. for turbine casing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
    • F02C7/00—Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
    • F02C7/20—Mounting or supporting of plant; Accommodating heat expansion or creep
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02K—JET-PROPULSION PLANTS
    • F02K1/00—Plants characterised by the form or arrangement of the jet pipe or nozzle; Jet pipes or nozzles peculiar thereto
    • F02K1/78—Other construction of jet pipes
    • F02K1/80—Couplings or connections
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02K—JET-PROPULSION PLANTS
    • F02K1/00—Plants characterised by the form or arrangement of the jet pipe or nozzle; Jet pipes or nozzles peculiar thereto
    • F02K1/78—Other construction of jet pipes
    • F02K1/82—Jet pipe walls, e.g. liners
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02K—JET-PROPULSION PLANTS
    • F02K1/00—Plants characterised by the form or arrangement of the jet pipe or nozzle; Jet pipes or nozzles peculiar thereto
    • F02K1/78—Other construction of jet pipes
    • F02K1/82—Jet pipe walls, e.g. liners
    • F02K1/822—Heat insulating structures or liners, cooling arrangements, e.g. post combustion liners; Infrared radiation suppressors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02K—JET-PROPULSION PLANTS
    • F02K9/00—Rocket-engine plants, i.e. plants carrying both fuel and oxidant therefor; Control thereof
    • F02K9/08—Rocket-engine plants, i.e. plants carrying both fuel and oxidant therefor; Control thereof using solid propellants
    • F02K9/32—Constructional parts; Details not otherwise provided for
    • F02K9/34—Casings; Combustion chambers; Liners thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02K—JET-PROPULSION PLANTS
    • F02K9/00—Rocket-engine plants, i.e. plants carrying both fuel and oxidant therefor; Control thereof
    • F02K9/08—Rocket-engine plants, i.e. plants carrying both fuel and oxidant therefor; Control thereof using solid propellants
    • F02K9/32—Constructional parts; Details not otherwise provided for
    • F02K9/34—Casings; Combustion chambers; Liners thereof
    • F02K9/343—Joints, connections, seals therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02K—JET-PROPULSION PLANTS
    • F02K9/00—Rocket-engine plants, i.e. plants carrying both fuel and oxidant therefor; Control thereof
    • F02K9/08—Rocket-engine plants, i.e. plants carrying both fuel and oxidant therefor; Control thereof using solid propellants
    • F02K9/32—Constructional parts; Details not otherwise provided for
    • F02K9/34—Casings; Combustion chambers; Liners thereof
    • F02K9/346—Liners, e.g. inhibitors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23R—GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS
    • F23R3/00—Continuous combustion chambers using liquid or gaseous fuel
    • F23R3/005—Combined with pressure or heat exchangers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23R—GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS
    • F23R3/00—Continuous combustion chambers using liquid or gaseous fuel
    • F23R3/42—Continuous combustion chambers using liquid or gaseous fuel characterised by the arrangement or form of the flame tubes or combustion chambers
    • F23R3/60—Support structures; Attaching or mounting means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2230/00—Manufacture
    • F05D2230/60—Assembly methods
    • F05D2230/64—Assembly methods using positioning or alignment devices for aligning or centring, e.g. pins
    • F05D2230/642—Assembly methods using positioning or alignment devices for aligning or centring, e.g. pins using maintaining alignment while permitting differential dilatation
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T50/00—Aeronautics or air transport
    • Y02T50/60—Efficient propulsion technologies, e.g. for aircraft
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49316—Impeller making
    • Y10T29/4932—Turbomachine making
    • Y10T29/49325—Shaping integrally bladed rotor

Definitions

  • This disclosure relates generally to gas turbine engines and, more particularly, to hanger assemblies for supporting and installing heat shield liners in gas turbine engines.
  • LPC low pressure compressor
  • HPC high pressure compressor
  • HPT high pressure turbine
  • HPT high pressure turbine
  • HPT high pressure turbine
  • HPT is typically disposed upstream of the LPT so the HPC and HPT are disposed between the LPC and the LPT.
  • a combustion chamber is disposed between the HPC and HPT so high energy fuel can be mixed with the compressed air from the HPC and ignited to form a high energy gas stream for driving the HPT and LPT which, in turn, drive the HPC and LPC respectively.
  • Such a high energy gas stream can damage certain components of a gas turbine engine, particularly the case structure which surrounds the engine components.
  • one use for heat shield liners is as a liner for an exhaust nozzle of a gas turbine engine.
  • extreme temperatures can develop in an exhaust nozzle.
  • the extreme temperatures can cause failure by burning through the nozzle wall.
  • one prior art liner device places a plurality of perforated panels inside the nozzle. The panels are held and positioned away from the nozzle wall by supports that create a cooling air plenum between the nozzle wall and the panels.
  • An additional use for heat shield liners can be found in an augmenter of a gas turbine engine. Augmenters are used to increase the thrust output. Additional fuel is injected into an exhaust duct formed downstream of the LPT and is ignited to provide an additional high energy gas stream which, in certain circumstances, is mixed with fan airflow and then ejected through an exhaust nozzle system to provide high energy thrust output from the engine.
  • An augmenter is normally located within the exhaust duct of the engine, and, in most cases, some heat shielding must be provided for protecting the exhaust duct from the extremely high temperatures associated with the augmenter.
  • One way to provide this protection is to position a heat shield liner within the structural case that defines the exhaust duct and to pass cooling air between the liner and the structural case.
  • the cooling air may be air that bypasses the compressors and turbines or a mixture of such bypass air and air passing through the compressors and turbines.
  • a number of basic problems confront the designer of heat shield liners confront the designer of heat shield liners.
  • a first problem is concerned with structural stabilization of the relatively lightweight, tubular structures which form the liners.
  • the liners are spaced radially inwardly from the structural case and are prone to thermal expansion in an axial direction, which causes translational or lateral movement of the liner with respect to the case, typically in the aft direction.
  • the liners are also subjected to substantial internal pressure by the high energy combustion gases. Further, in order to assure a relatively constant flow of cooling air between the case and the liner, it is necessary that the coolant air pressure between the liner and the case be greater than the pressure of the combustion gases inside the liner.
  • the coolant can flow through slots or openings provided in the liner and to form a film of coolant on the inside of the liner, thereby protecting the liner from the high energy combustion gases within the liner.
  • the thin liner shells must be stabilized against buckling or collapsing radially inwardly and because of the thermal expansion in an axial direction, the liners must be capable of translational or lateral movement without creating gaps or openings that expose the case to the combustion gases.
  • One such manner of stabilizing heat shield liners is to couple the liner to the structural case in a spaced-apart manner by a series of hanger assemblies which are mounted to the inside of the case and connected to various points or similar hangers mounted along the liner as disclosed in U.S. Patent Nos. 7,814,753 and 7,861,535 .
  • FIG. 1 shows a sectional view of an exhaust system 30 for a gas turbine engine which includes an exhaust duct case 31 that is coupled to a heat shield liner 32 by a plurality of hangers shown generally at 33.
  • a gas turbine engine is shown schematically at 34.
  • another exhaust system 40 for a gas turbine engine 34 is shown in FIG. 2 .
  • An exhaust duct case 41 is connected to one or more heat shield liners 42 by a plurality of hangers 43.
  • each hanger 33, 43 includes a plurality of parts and, as will be apparent to those skilled in the art, it is very difficult to assemble the liners 32, 42 to the cases 31, 41 due to the number of parts included in each hanger 33, 43 and complicated assembly procedures that may require shimming or other procedural steps. Further, the systems of FIGS. 1 and 2 do not provide for any translational or lateral movement of the liners 32, 42 in an axial direction to compensate for thermal expansion.
  • pivoting joint will be used to cover universal joints, swivel joints, ball joints and other like joints that will be apparent to those skilled in the art.
  • proximal refers to an end of a part or component that appears below the main body of the part or component in the drawings.
  • distal refers to an end of a part or component that appears above the main body of the part or component in the drawings.
  • a hanger assembly for coupling a heat shield liner to a case according to the accompanying claim 1.
  • FIG. 21 is a plan view further illustrating the liner attachment assembly of the hanger assembly shown in FIGS. 19-20 .
  • FIGS. 22-25 illustrate the assembly sequence for the hanger assembly disclosed in FIGS. 19-21 .
  • proximal refers to an end of a component appearing towards the bottom of a figure while the term distal refers to an end of a component appearing towards the top of a figure.
  • the hanger assembly 50 may include a first segment 53 that is connected to the liner 52 by way of the liner attachment assembly 59 that may include fastener or stud 54 that may be fixed, attached or coupled to the liner 52.
  • the stud 54 is threaded.
  • Other types of liner attachment assemblies 59 may also be used for attaching the first segment 53 to the liner 52, as will be apparent to those skilled in the art.
  • the first segment 53 may include a distal end 56 that is coupled to a cross member 57.
  • the hanger assembly 50 may also include a second segment 58 that may include a proximal end 61 that similarly may be connected to the cross member 57 wherein the cross member 57 forms a pivoting joint 63. While the pivoting joint 63 shown in FIG. 3 is of the universal type, those skilled in the art will recognize that ball joints, swivel joints or other types of joints may be used as well.
  • the second segment 58 may also include a flanged distal end 64 that may abut an annular outer bushing 65.
  • the annular outer bushing 65 is threadably connected to the case 51 as the case 51 may include a threaded opening 66 for accommodating the outer bushing 65.
  • the outer bushing 65 may also accommodate an annular inner bushing 67 with a gap 68 disposed between the inner and outer bushings 67, 65.
  • the inner bushing 67 has a clearance hole 71, while the flanged distal end 64 of the second segment 58 may have a threaded inner surface 72.
  • the threaded inner surface 72 and the inner bushing 67 are connected together by the threaded fastener 73.
  • the inner bushing 67 may be connected to the second segment 58 by means other than using a threaded fastener 73.
  • the fastener 73 may also include a distal head 74 that may include a flange 75.
  • the flange 75 traps a washer 76 between the distal head 74 and the inner bushing 67.
  • the hanger assembly 50 provides certain clearances for translational (lateral) movement, especially in either axial direction to compensate for thermal expansion.
  • the threaded outer bushing 65 is rotated using a spanner wrench received in the recesses 78 until light contact occurs between the outer bushing 65 and the flanged distal end 64 of the second segment 58.
  • the bushing 65 may be locked in place with adhesive, staking or use of a jam nut (not shown).
  • the inner bushing 67 may be longer than the outer bushing 65.
  • the gap 68 may be disposed between the inner and outer bushings 67, 65 respectively.
  • the gaps 77, 68 provide for translational or lateral movement of the heat shield 52 with respect to the case 51. Translational or lateral movement of the heat shield 52 with respect to the case 51 may be caused by thermal expansion of the heat shield 52 in either axial direction as well as misalignment caused by pivotal movement at the pivoting joint 63.
  • FIGS. 4-10 yet another hanger assembly 150 is disclosed that connects a case 51 to a liner 52.
  • the hanger assembly 150 may include liner attachment assembly 159 and a case attachment assembly 160.
  • the liner attachment assembly couples a first segment 153 to the liner 52 with a threaded proximal end 155 that may be secured to the liner 52 by way of a stud 154.
  • the stud 154 emerges from a node 82 that may be formed by intersecting ribs 81 as shown in FIGS. 5-10 .
  • the first segment 153 may also include a distal end 156 that is coupled to a cross member 157 that passes through a swivel 162 disposed at the proximal end 161 of the second segment 158 to form the pivoting joint 163.
  • the second segment 158 may include a flanged distal end 164 with a threaded opening 172 that may be used to couple the second segment 158 to the case 51 by way of the case attachment assembly 160.
  • the case attachment assembly 160 may include the bushing 165 and the fastener 173.
  • the threaded opening 172 in the second segment 158 receives the fastener 173, which may also include a head 174 that may be disposed above a washer 176.
  • the hanger assembly 150 may include a single annular bushing 165 that may be connected to the case 51 via a threaded connection as shown in FIGS. 4 and 7-10 .
  • the gap 168 between the bushing 165 and the fastener 173 as well as the gaps 177, 277 between the bushing 165 and the washer 176 and between the bushing 165 and flanged distal end 164 respectively provide for translational or lateral movement caused by assembly tolerances or relative motion between case 51 and liner 52 due to thermal expansion.
  • FIGS. 5-10 A sequence for assembling the hanger assembly 150 shown in FIG. 4 is illustrated in FIGS. 5-10 .
  • the swivel and second segment 158 are preassembled to the first segment 153 with the cross member 157 thereby forming the pivoting joint 163.
  • Self-locking thread elements may be disposed within the threaded hole 83 of the distal end 155 of the first segment 153.
  • a hook 84 may be employed and inserted through the opening 66 in the case 51 ( FIG. 7 ) to engage the second segment 158 and to manipulate the second segment 158 into a vertical orientation as shown in FIG. 6 .
  • a tool or rod 85 may be employed to hold the second segment 158 in place while the hook 84 may be removed as shown in FIG. 6 .
  • the outer bushing 165 may be installed over the rod 84 and into the threaded opening 66 as shown in FIG. 7 .
  • the bushing 65 may be rotated or unthreaded slightly to produce a small gap 87 which contributes to the translational or lateral tolerance of the hanger assembly 150.
  • the bushing 65 may then be locked into position using self locking threads or by staking.
  • the rod 84 may be removed and the washer 176 is placed over the bushing 165.
  • the fastener 173 may be inserted through the washer 176, the bushing 165 and the clearance or gap 168 before being coupled to the second segment 158.
  • the gap 168 provides for translational or lateral movement caused by thermal expansion of the heat shield liner 52.
  • recesses 178 are provided in the bushing 165 for installing the bushing 165 with a spanner wrench.
  • FIGS. 11-12 yet another hanger assembly 250 is disclosed that connects a case 51 to a liner 52 in a spaced-apart fashion.
  • reinforcing ribs 81 FIG. 11
  • the hanger assembly 215 may include a first segment 253 with a forked distal end 256 that accommodates a cross member 257. As shown in FIG.
  • the proximal end 255 of the first segment 253 may include a threaded opening for accommodating a stud 154 for securing the first segment 253 to the liner 52.
  • the hanger assembly 250 may also include a second segment 258 with a forked proximal end 261 that is also connected to the cross member 257 that forms the pivoting joint 263 with forked distal end 256 of the first segment 253 (see also FIG. 11 ).
  • the second segment 258 may be connected to the case 51 via the case attachment assembly 260 that may include a fastener 273.
  • the fastener 273 may have a head 274 that rides on top of an elongated washer plate 91, which can be best seen in FIGS. 15-16 .
  • the washer plate 91 may include a slot 92 ( FIG. 15 ) within which the fastener 273 may move thereby providing translational or lateral movement of the hanger assembly 250 and liner 52 with respect to the stationary case 51.
  • a conventional bolt or fastener 273 may be used to connect the second segment 258 to the case 51 and other fastening means or case attachment assemblies will be apparent to those skilled in the art.
  • the elongated washer plate 91 may include a pair of openings 93, 94 ( FIG. 12 ) through which studs 295 may extend which, in combination with the nuts 296, are used to secure the washer plate 91 to the case 51. Also shown in FIGS.
  • 11-12 is a cover 97 with a recess 98 disposed in an underside thereof for permitting translational movement of the head 274 of the fastener 273.
  • a conventional fastener or bolt 273 may be utilized as opposed to the shoulder bolt 173 shown in the hanger assembly 150 of FIGS. 3-10 .
  • FIGS. 13-18 The installation of the hanger assembly 250 is illustrated in FIGS. 13-18 .
  • the first segment 253 may be secured to one of the studs 154 and the pivoting joint 263 has been preassembled, meaning that the second segment 258 may be already coupled to the first segment 253.
  • self-locking thread elements may be used to secure the first segment 253 to the stud 154.
  • a tool or rod may be used to place the second segment 258 in an upright or vertical position as shown in FIG. 13 .
  • the studs 295 may be integrally connected to the case 51. Further, a recess 101 is disposed in the case 51 to accommodate the washer plate 91 as shown in FIG. 14 .
  • the washer plate 91 may then be installed as shown in FIG. 15 while a tool 84 or rod 85 (not shown in FIG. 15 ; see FIGS. 5-8 ) may be used to maintain the second segment 258 in a vertical orientation.
  • the nuts 296 may secure the washer plate 91 in place.
  • the fastener 273, which may be a conventional bolt, may then be inserted through the slot 92 and into the threaded opening of the second segment 258 as shown in FIG. 16 .
  • the cover 97 may be installed before the nuts 296 are secured to the studs 295 as shown in FIGS. 17-18 .
  • FIGS. 19-25 Yet another hanger assembly 350 is illustrated in FIGS. 19-25 .
  • the hanger assembly 350 is not secured to the liner 52 via a stud 154 ( FIGS. 3-18 ) or 54 ( FIG. 2 ) but, instead, the liner attachment assembly 359 may include a bracket 101 that may be mounted to the liner 52.
  • the bracket 101 may be secured to the liner 52 by four studs 354 and four nuts 396.
  • the bracket 101 may include a raised section 102 which, as shown in FIG. 20 receives a captive bolt 103.
  • the term captive bolt 103 is used here because the bolt 103 has a rectangular head 104 as shown in FIG. 22 and an upwardly protruding threaded stud 105.
  • the rectangular head 104 is unable to turn when it is trapped between the raised section 102 of the bracket 101 and the liner 52. As a result, the head 104 may slide laterally or translationally without rotation.
  • the hanger assembly 350 may also include a washer 376 disposed between the first segment 353 and the bracket 101.
  • the first segment 353, second segment 358 and cross member 357 form the pivoting joint 363.
  • the second segment 358 may be connected to the case 51 by a case attachment assembly 360 that may include a threaded bushing 365 and the fastener 373.
  • the bracket 101 permits the bolt 103 to slide laterally (translational movement) within the slot 106 but not rotate within the raised section 102.
  • the hanger assembly 350 may be assembled according to the sequence set forth in FIGS. 22-23 .
  • the bolt 103 may be placed on the liner 52 between four studs 354.
  • a precise alignment is not required because, as shown in FIG. 23 , the bracket 101 may include a slot 106 that can easily accommodate the stud 105 of the bolt 103 to permit translational or lateral movement.
  • the bracket 101 may be secured to the four studs 354 with the four nuts 396 as shown.
  • the washer 376 may be placed over the stud 105 as shown in FIG. 24 and the preassembled pivoting joint 363 may be screwed onto the stud 105 as shown in FIG. 25 .
  • the attachment of the second segment 358 to the bushing 365 and fastener 73 is illustrated in FIGS. 19-20 .
  • a variety of hanger assemblies 15, 150, 250, 350 are disclosed for connecting a heat shield liner 52 to a case 51 of a gas turbine engine.
  • Each hanger assembly 15, 150, 250, 350 may include a pivoting joint 63, 163, 263, 363 which provides some translational or lateral movement of the liner 52 with respect to the case 51.
  • each hanger assembly 15, 150, 250, 350 may also include a liner attachment assembly 59, 159, 259, 359 or a case attachment assembly 60, 160, 260, 360 that permits additional translational or lateral movement.
  • the use of threaded connections while not required, enables the hanger assemblies 15, 150, 250, 350 to be adjustable.
  • the disclosed hanger assemblies 15, 150, 250, 350 are easy to assemble and can be adjusted outside of the case 51. Self-locking threads may be utilized, but are not required.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Exhaust Silencers (AREA)

Claims (14)

  1. Aufhängeranordnung (50) zum Koppeln einer Hitzeschildauskleidung (52) an ein Gehäuse (51), wobei die Aufhängeranordnung (50) Folgendes umfasst:
    ein Schwenkgelenk (63), das ein erstes Segment (53) an ein zweites Segment (58) koppelt, wobei das erste Segment (53) in einem befestigten Zustand durch eine Auskleidungsanbringungsanordnung (59) an eine Auskleidung (52) gekoppelt ist, wobei das zweite Segment (58) in einem befestigten Zustand durch eine Gehäuseanbringungsanordnung (60) an das Gehäuse (51) gekoppelt ist;
    wobei mindestens eine der Auskleidungsanbringungsanordnung (59) und der Gehäuseanbringungsanordnung (60) eine Verschiebebewegung des ersten oder zweiten Segments (53, 58) jeweils in Bezug auf das Gehäuse (51) zulässt;
    dadurch gekennzeichnet, dass die Gehäuseanbringungsanordnung (60) eine ringförmige äußere Buchse (65) einschließt, die durch das Gehäuse (51) hindurchgeht und damit verbunden ist, wobei die äußere Buchse (65) eine ringförmige innere Buchse (67) aufnimmt, wobei die innere Buchse (67) an ein Befestigungselement (73) gekoppelt ist, das die innere Buchse (67) an das zweite Segment (58) koppelt, wobei die innere Buchse (67) von der äußeren Buchse (65) beabstandet ist, um einen Ringspalt (68) zwischen der äußeren und inneren Buchse (65, 67) zu definieren, der eine Verschiebebewegung des zweiten Segments (58) und des Befestigungselements (73) in Bezug auf die äußere Buchse (65) und das Gehäuse (51) zulässt.
  2. Aufhängeranordnung nach Anspruch 1, wobei die Gehäuseanbringungsanordnung eine ringförmige äußere Buchse einschließt, die durch das Gehäuse hindurchgeht und damit verbunden ist, wobei die äußere Buchse ein Befestigungselement aufnimmt, das die äußere Buchse an das zweite Segment koppelt, wobei das Befestigungselement von der äußeren Buchse beabstandet ist, um einen Ringspalt zwischen dem Befestigungselement und der äußeren Buchse zu definieren, der eine Verschiebebewegung des zweiten Segments und des Befestigungselements in Bezug auf die äußere Buchse und das Gehäuse zulässt.
  3. Aufhängeranordnung nach Anspruch 1, wobei das Befestigungselement (73) einen distalen Kopf (74) und einen proximalen Gewindeabschnitt einschließt, der die innere Buchse (67) an das zweite Segment (58) koppelt, wobei die innere Buchse (67) länger ist als die äußere Buchse (65), um mindestens einen Zwischenspalt (77) zwischen dem distalen Kopf (74) des Befestigungselements (73) und der äußeren Buchse (65) bereitzustellen, der eine Verschiebebewegung des zweiten Segments (58) und des Befestigungselements (73) in Bezug auf die äußere Buchse (65) und das Gehäuse (51) zulässt.
  4. Aufhängeranordnung nach Anspruch 1, wobei das Befestigungselement (73) einen distalen Kopf (74) und einen proximalen Gewindeabschnitt einschließt, der die innere Buchse (67) an das zweite Segment (58) koppelt, wobei das Befestigungselement (73) durch eine Unterlegscheibe (76) hindurchgeht, die zwischen dem distalen Kopf (74) und der inneren Buchse (67) eingeschlossen ist, wobei die innere Buchse (67) länger ist als die äußere Buchse (65), um mindestens einen Zwischenspalt (77) zwischen der Unterlegscheibe (76) und der äußeren Buchse (65) bereitzustellen, der eine Verschiebebewegung des zweiten Segments (58) und des Befestigungselements (73) in Bezug auf die äußere Buchse (65) und das Gehäuse (51) zulässt.
  5. Aufhängeranordnung nach Anspruch 2, wobei das Befestigungselement einen proximalen Gewindeabschnitt einschließt, der das Befestigungselement mit dem zweiten Segment verbindet, wobei das Befestigungselement außerdem einen distalen Kopf und einen mittleren Schulterabschnitt einschließt, der zwischen dem proximalen Gewindeabschnitt und dem distalen Kopf angeordnet und breiter ist als der proximale Gewindeabschnitt, wobei der mittlere Schulterabschnitt länger ist als die äußere Buchse, um mindestens einen Zwischenspalt zwischen dem Kopf und der Buchse oder zwischen dem zweiten Segment und der Buchse bereitzustellen, der eine Verschiebebewegung des zweiten Segments und des Befestigungselements in Bezug auf die äußere Buchse und das Gehäuse zulässt, wobei die Aufhängeranordnung gegebenenfalls ferner eine Unterlegscheibe einschließt, die zwischen dem Kopf des Befestigungselements und der äußeren Buchse angeordnet ist.
  6. Aufhängeranordnung nach einem der vorhergehenden Ansprüche, wobei die Auskleidungsanbringungsanordnung (59) einen Stift (54) einschließt, der mit der Auskleidung (52) verbunden ist und der über ein Gewinde mit dem ersten Segment (53) verbunden ist.
  7. Aufhängeranordnung nach Anspruch 1, wobei das erste Segment (53) ein distales gegabeltes Ende (56) einschließt, das schwenkbar mit einem Querelement (57) verbunden ist und das zweite Segment (58) ein proximales gegabeltes Ende (61) einschließt, das schwenkbar mit dem Querelement (57) verbunden ist;
    das Querelement (57) das zweite Segment (58) schwenkbar an das erste Segment (53) koppelt, um das Schwenkgelenk (63) zu bilden.
  8. Aufhängeranordnung nach Anspruch 1, wobei eines des ersten Segments und des zweiten Segments ein distales Ende einschließt, das schwenkbar mit einem Drehgelenk verbunden ist, und das andere des ersten Segments und des zweiten Segments ein proximales gegabeltes Ende einschließt, das schwenkbar mit einem Querelement verbunden ist, das durch das Drehgelenk hindurchgeht.
  9. Aufhängeranordnung nach Anspruch 1, wobei die Gehäuseanbringungsanordnung eine Unterlegplatte einschließt, die von dem zweiten Segment gegenüber dem Gehäuse angeordnet ist, wobei die Unterlegplatte einen Schlitz und mindestens eine Öffnung einschließt, wobei die Unterlegplatte mit dem Gehäuse durch mindestens einen Stift verbunden ist, der mit dem Gehäuse verbunden ist und durch die mindestens eine Öffnung hindurchgeht, wobei das zweite Segment mit dem Gehäuse durch einen Bolzen verbunden ist, der ein proximales Gewindeende, das mit dem zweiten Segment verbunden ist und einen distalen Kopf aufweist, der verschiebbar über dem Schlitz der Unterlegplatte angeordnet ist, um eine Verschiebebewegung des zweiten Segments und des Bolzens entlang des Schlitzes zuzulassen; wobei die Aufhängeranordnung gegebenenfalls eine Abdeckung einschließt, die über der Unterlegplatte angeordnet ist, wobei die Unterlegplatte zwischen der Abdeckung und dem Gehäuse angeordnet ist, wobei der distale Kopf zwischen der Unterlegplatte und der Abdeckung angeordnet ist, und die Abdeckung von dem distalen Kopf beabstandet ist, um eine Verschiebebewegung des distalen Kopfs entlang des Schlitzes zuzulassen.
  10. Aufhängeranordnung nach Anspruch 1, wobei die Gehäuseanbringungsanordnung eine ringförmige Buchse, die über ein Gewinde mit dem Gehäuse verbunden ist und ein Befestigungselement einschließt, das durch die Buchse hindurchgeht, bevor es mit dem zweiten Segment verbunden wird,
    die Auskleidungsanbringungsanordnung eine Halterung einschließt, die mit der Auskleidung verbunden ist, wobei die Halterung einen erhabenen Abschnitt einschließt, wobei ein Schlitz in dem erhabenen Abschnitt angeordnet ist, wobei das erste Segment ein proximales Gewindeende aufweist, das mit einem distalen Gewindeende eines Bolzens verbunden ist, wobei der Bolzen einen proximalen Kopf aufweist, der zwischen dem erhabenen Abschnitt der Halterung und der Auskleidung eingeschlossen ist, wobei der Schlitz eine Verschiebebewegung des Kopfs des Bolzens und des ersten Segments zulässt.
  11. Aufhängeranordnung nach Anspruch 1, wobei die Gehäuseanbringungsanordnung eine längliche Unterlegplatte einschließt, die von dem zweiten Segment gegenüber dem Gehäuse angeordnet ist, wobei die längliche Unterlegplatte einen zentralen Schlitz einschließt, der zwischen einem Paar von Öffnungen angeordnet ist, wobei die Öffnungen jeweils durch einen Stift mit dem Gehäuse verbunden sind, der mit dem Gehäuse verbunden ist, wobei das zweite Segment mit dem Gehäuse durch einen Bolzen verbunden ist, der ein proximales Gewindeende, das mit dem zweiten Segment verbunden ist und einen distalen Kopf aufweist, der verschiebbar über dem Schlitz der länglichen Unterlegplatte angeordnet ist, um eine Verschiebebewegung des zweiten Segments und des Bolzens entlang des länglichen Schlitzes zuzulassen; und
    wobei die Auskleidungsanbringungsanordnung einen Stift einschließt, der mit der Auskleidung verbunden und über ein Gewinde in einer Gewindebohrung aufgenommen ist, die an einem proximalen Ende des ersten Segments angeordnet ist.
  12. Aufhängeranordnung nach Anspruch 1, wobei die Gehäuseanbringungsanordnung eine ringförmige Buchse, die über ein Gewinde mit dem Gehäuse verbunden ist und ein Befestigungselement einschließt, das durch die ringförmige Buchse hindurchgeht, bevor es mit dem zweiten Segment verbunden wird,
    die Auskleidungsanbringungsanordnung eine Halterung einschließt, die mit der Auskleidung verbunden ist, wobei die Halterung einen erhabenen Abschnitt einschließt, wobei das erste Segment ein proximales Gewindeende aufweist, das mit einem Gewindeende eines Bolzens verbunden ist, wobei der Bolzen einen geformten Kopf aufweist, der zwischen dem erhabenen Abschnitt der Halterung und der Auskleidung eingeschlossen ist, wobei der geformte Kopf an einer Drehung in dem erhabenen Abschnitt gehindert wird, wobei der erhabene Abschnitt eine Verschiebebewegung des Kopfs des Bolzens und des ersten Segments zulässt.
  13. Verfahren zur Befestigung einer Hitzeschildauskleidung (52) in einem Gehäuse (51), wobei das Verfahren Folgendes umfasst:
    Bereitstellen einer Vielzahl von Aufhängeranordnungen (50), um die Auskleidung (52) mit dem Gehäuse (51) zu verbinden, wobei jede Aufhängeranordnung (50) ein erstes Segment (53) und ein zweites Segment (58) einschließt, wobei jede Aufhängeranordnung (50) eine Auskleidungsanbringungsanordnung (59) und eine Gehäuseanbringungsanordnung (60) einschließt;
    wobei das Verfahren für jede Aufhängeranordnung (50) das Verbinden der Auskleidungsanbringungsanordnung (59) mit der Auskleidung (52) einschließt;
    Verbinden des ersten Segments (53) mit dem zweiten Segment (58), um ein Schwenkgelenk (63) zu bilden;
    Verbinden des ersten Segments (53) mit der Auskleidungsanbringungsanordnung (59);
    Verbinden der Gehäuseanbringungsanordnung (60) mit dem Gehäuse (52); und
    Verbinden der Gehäuseanbringungsanordnung (60) mit dem zweiten Segment (58);
    dadurch gekennzeichnet, dass die Gehäuseanbringungsanordnung (60) eine ringförmige äußere Buchse (65) einschließt, die durch das Gehäuse (51) hindurchgeht und damit verbunden ist, wobei die äußere Buchse (65) eine ringförmige innere Buchse (67) aufnimmt, wobei die innere Buchse (67) an ein Befestigungselement (73) gekoppelt ist, das die innere Buchse (67) an das zweite Segment (58) koppelt, wobei die innere Buchse (67) von der äußeren Buchse (65) beabstandet ist, um einen Ringspalt (68) zwischen der äußeren und inneren Buchse (65, 67) zu definieren, der eine Verschiebebewegung des zweiten Segments (58) und des Befestigungselements (73) in Bezug auf die äußere Buchse (65) und das Gehäuse (51) zulässt.
  14. Verfahren nach Anspruch 13, wobei das Verbinden des ersten Segments (53) mit dem zweiten Segment (58), um ein Schwenkgelenk (63) zu bilden, ferner das Verbinden des ersten Segments (53) mit dem zweiten Segment (58) einschließt, um ein Kreuzgelenk (63) zu bilden;
    wobei vorzugsweise ein distales Ende (56) des ersten Segments (53) eine Gabelung einschließt und ein proximales Ende (61) des zweiten Segments (58) eine Gabelung einschließt und das Verbinden des ersten Segments (53) mit dem zweiten Segment (58), um ein Schwenkgelenk (63) zu bilden, ferner das Verbinden des proximalen Endes (61) des zweiten Segments (58) mit dem distalen Ende (56) des ersten Segments (53) mit einem Querelement (57) einschließt, um ein Kreuzgelenk (63) zu bilden.
EP13874990.8A 2013-02-14 2013-12-13 Flexible hitzeschildauskleidungsaufhängeranordnung für gasturbinenmotoren und verfahren zur befestigung Active EP2956634B1 (de)

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